#x27;, instead of a 'while do.'
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of John Machin
Sent: Thursday, May 28, 2009 7:19 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recov
On 29/05/2009 10:18 AM, John Machin wrote:
> On 29/05/2009 9:34 AM, Gene Allen wrote:
>> Yeah.
>>
>> Since my code works in blocks, read/compress/encrypt/write, loop. Almost
>> all the real data was being written to the compressed file, however any
>> finalization and flushing of the stream wasn
On 29/05/2009 9:34 AM, Gene Allen wrote:
> Yeah.
>
> Since my code works in blocks, read/compress/encrypt/write, loop. Almost
> all the real data was being written to the compressed file, however any
> finalization and flushing of the stream wasn't occurring (since the encrypt
> was failing)
a
>
> Since my code works in blocks, read/compress/encrypt/write, loop. Almost
> all the real data was being written to the compressed file, however any
> finalization and flushing of the stream wasn't occurring (since the encrypt
> was failing) so the last bit of any SQLite database wouldn't be
SQLite Database; kennethinbox-sql...@yahoo.com
Subject: Re: [sqlite] corrupt database recovery
> I think I found my defect: my old stress tests was based on doing
> compression/encryptions/decryption/decompression passes on files of random
> sizes; so I would do about a 10 million passes or so
> I think I found my defect: my old stress tests was based on doing
> compression/encryptions/decryption/decompression passes on files of random
> sizes; so I would do about a 10 million passes or so and say...that's pretty
> good.
>
> Well...a more structured test exposed the problem and it w
ur help and advice.
Gene
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Ken
Sent: Thursday, May 28, 2009 11:32 AM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recovery
Gene,
Im sure others have sugg
Gene,
Im sure others have suggested, but have you tried running your code through
valgrind?
Can you remove the custom VFS ?
--- On Wed, 5/27/09, Gene Allen wrote:
> From: Gene Allen
> Subject: Re: [sqlite] corrupt database recovery
> To: mgr...@medcom-online.de, "'Ge
x27;m running a large test on the encryption/compression code to
> see
> if I can get it to break.
>
> -Original Message-
> From: sqlite-users-boun...@sqlite.org
> [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Marcus Grimm
> Sent: Wednesday, May 27, 2009 5:09
'General Discussion of SQLite Database'
Subject: Re: [sqlite] corrupt database recovery
I'm sorry that I can't help with the SQLite part, but couldn't you write a
simple test harness that would create a file (of random size?) with random
contents, encrypt/compress to a
alf Of Marcus Grimm
Sent: Wednesday, May 27, 2009 5:09 PM
To: 'General Discussion of SQLite Database'
Subject: Re: [sqlite] corrupt database recovery
sorry, I don't know where sqlite stores any kind of data like
index or raw table, my suspect is that, since sqlite
usually looks for a
neral Discussion of SQLite Database'
> Subject: Re: [sqlite] corrupt database recovery
>
> I've reviewed the code over and over again, but am yet to find it. But
> it
> is a good bit of very complicated code (blowfish and compression code).
>
> That's why I was a
rethink my approach.
>
>
> -Original Message-
> From: sqlite-users-boun...@sqlite.org
> [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Marcus Grimm
> Sent: Wednesday, May 27, 2009 2:44 PM
> To: General Discussion of SQLite Database
> Subject: Re: [sqlite] corrupt da
ll have to rethink my approach.
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of Marcus Grimm
Sent: Wednesday, May 27, 2009 2:44 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recovery
so, if you thin
John Elrick
> Sent: Wednesday, May 27, 2009 12:58 PM
> To: General Discussion of SQLite Database
> Subject: Re: [sqlite] corrupt database recovery
>
> What platform? Any chance they are using a network drive?
>
>
> John
>
> Gene wrote:
>> My code is outside th
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of John Elrick
Sent: Wednesday, May 27, 2009 12:58 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recovery
What platform? Any chance they
---Original Message-
> From: sqlite-users-boun...@sqlite.org
> [mailto:sqlite-users-boun...@sqlite.org] On Behalf Of John Elrick
> Sent: Wednesday, May 27, 2009 10:59 AM
> To: General Discussion of SQLite Database
> Subject: Re: [sqlite] corrupt database recovery
>
> Gene All
John Elrick
> Sent: Wednesday, May 27, 2009 10:59 AM
> To: General Discussion of SQLite Database
> Subject: Re: [sqlite] corrupt database recovery
>
> Gene Allen wrote:
>> Ok...it's happened again and I've decided that I need to track this down
>> once and for all!
>
Sent: Wednesday, May 27, 2009 10:59 AM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recovery
Gene Allen wrote:
> Ok...it's happened again and I've decided that I need to track this down
> once and for all!
>
> Here is what I'm seeing
Gene Allen wrote:
> Ok...it's happened again and I've decided that I need to track this down
> once and for all!
>
> Here is what I'm seeing: I get errors when I do a integrity_check (see
> below), but I can .dump it to a text file and then .read it into another
> database ok.
>
> It seems to me th
.@sqlite.org] On Behalf Of John Machin
Sent: Saturday, April 25, 2009 8:15 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recovery
On 26/04/2009 5:47 AM, Gene wrote:
> Every now and again, we have a database that gets corrupt in the field
(bad
> coding o
Cool solution.
On Sun, Apr 26, 2009 at 6:39 AM, Jim Wilcoxson wrote:
> You could do a binary search to find the highest accessible rowid:
>
> select rowid where rowid = 2147483647 (fails)
> select rowid where rowid = 1073741824 (fails)
> ...
> select rowid where rowid = 65536 (fails)
You could do a binary search to find the highest accessible rowid:
select rowid where rowid = 2147483647 (fails)
select rowid where rowid = 1073741824 (fails)
...
select rowid where rowid = 65536 (fails)
select rowid where rowid = 32768 (works!)
select rowid where rowid = 4
Hi Gene,
On Apr 25, 2009, at 3:47 PM, Gene wrote:
> Every now and again, we have a database that gets corrupt in the
> field (bad
> coding on our end, not sqlite).
How do you corrupt a database with bad coding? Just curious...
-- Tito
___
sqlite-use
t build my insert on the fly.
Thank you.
Gene
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of John Machin
Sent: Saturday, April 25, 2009 9:30 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt data
On 26/04/2009 11:28 AM, Gene wrote:
> You are exactly right John...that is indeed what the code looks
> like...except we have over 25 columns (it's a flat table).
I presume that you are referring to this:
"""
Write a script that loops around doing 'select * from mytable where
rowid = ?' on a c
hanks for you comments John!
-Original Message-
From: sqlite-users-boun...@sqlite.org
[mailto:sqlite-users-boun...@sqlite.org] On Behalf Of John Machin
Sent: Saturday, April 25, 2009 8:15 PM
To: General Discussion of SQLite Database
Subject: Re: [sqlite] corrupt database recovery
On 26/
On 26/04/2009 5:47 AM, Gene wrote:
> Every now and again, we have a database that gets corrupt in the field (bad
> coding on our end, not sqlite).
>
Hi Gene,
The obvious question: why not fix the bad code?
What does 'PRAGMA integrity_check;' say about these corrupt databases?
> When we get on
Every now and again, we have a database that gets corrupt in the field (bad
coding on our end, not sqlite).
When we get one of these corrupt databases, we recover what we can by get
one row at a time by rowid, like 'select * from mytable where rowid = 1' and
we inc the row number every time.
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